Takaaki Yanagisawa
29Patents
19h-index
34Co-inventors
77Inventor score
Filing activity: Nov 29, 1991 → Feb 1, 2008
Most-cited inventions
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US6507720B2 | Color image forming apparatus and toner replenishing apparatus each including plural toner containers received in receiving member of setting part and toner containers therefor | Physics | 120 | Expired |
| US6393241B1 | Nozzle having an end portion capable of penetrating into a toner discharging portion included in a toner container that stores powdery toner | Performing Operations; Transporting | 111 | Expired |
| US5455662A | Developer replenishing device and developer container for use therewith | Emerging Cross-Sectional Technologies | 104 | Expired |
| US6628908B2 | Toner supply unit and image forming apparatus | Emerging Cross-Sectional Technologies | 93 | Expired |
| US6591077B2 | Image forming apparatus and toner container therefor | Physics | 82 | Expired |
| US5500719A | Developer replenishing device and developer container for use therewith | Emerging Cross-Sectional Technologies | 73 | Expired |
| US6501913B2 | Container, its support structure, and image formation apparatus | Physics | 66 | Expired |
| US5441177A | Toner container and toner replenishing device including a cap member having a shutter | Emerging Cross-Sectional Technologies | 65 | Expired |
| US6567637B2 | Apparatus and method for replenishing a developing device with toner while suppressing toner remaining | Emerging Cross-Sectional Technologies | 59 | Expired |
| US5627631A | Developer replenishing device and developer container for use therewith | Emerging Cross-Sectional Technologies | 58 | Expired |
| US6075963A | Developer replenishing device and developer container for use therewith | Emerging Cross-Sectional Technologies | 57 | Expired |
| US5822663A | Developer replenishing device and developer container for use therewith | Emerging Cross-Sectional Technologies | 49 | Expired |
| US6289195A | Developer replenishing device and developer container for use therewith | Emerging Cross-Sectional Technologies | 48 | Expired |
| US5918090A | Developer replenishing device and developer container for use therewith | Emerging Cross-Sectional Technologies | 46 | Expired |
| US6775503B2 | Image forming apparatus with improved capabilities for toner supply | Physics | 42 | Expired |
| US5367363A | Image forming apparatus having rotatable electrophotographic process unit | Physics | 28 | Expired |
| US6748190B2 | Apparatus and method for replenishing a developing device with toner while suppressing toner remaining | Emerging Cross-Sectional Technologies | 23 | Expired |
| US7130558B2 | Toner supply unit and image forming apparatus | Emerging Cross-Sectional Technologies | 20 | Expired |
| US6418293B2 | Developer replenishing device and developer container for use therewith | Emerging Cross-Sectional Technologies | 19 | Expired |
| US6751431B2 | Developer replenishing device and developer container for use therewith | Emerging Cross-Sectional Technologies | 18 | Expired |
| USRE36301E | Image forming apparatus having rotatable electrophotographic process unit | General | 14 | Expired |
| US5245385A | Image forming apparatus which reduces noise generated therefrom | Physics | 13 | Expired |
| US7209689B2 | Toner supply unit and image forming apparatus | Emerging Cross-Sectional Technologies | 12 | Expired |
| US7088945B2 | Toner supply unit and image forming apparatus | Emerging Cross-Sectional Technologies | 8 | Expired |
| US7218880B2 | Apparatus and method for replenishing a developing device with toner while suppressing toner remaining | Emerging Cross-Sectional Technologies | 7 | Expired |
Source: USPTO / EPO open patent data. Inventor disambiguation is heuristic; counts are objective bibliographic measures.